Radioanalyzer



Dec. 10, i935. R N AUBLE 2,023,947

RADIOANALYZER Filed D60. 28, 1955 /0 l/4 [Z Q 43 /I g l zal INVENTOR, ofr /V. .H1/6415:'

MKM Lt ATTORNEY Patented Dec. l0, 1935 A UNITED STATES ATENT OFFICE RADIOANALYZER Robert N. Auble, Indianapolis, Ind., assignor to Weston Electrical Instrument Corporation, Newark, N. J., a corporation v Application December 28, 1933, Serial No. 704,235

12 Claims. (Cl. 25o-20) This invention relates to a testing set for ing material and forms a base for the electrical analyzing operating conditions in electrical cirapparatus associated with the unit proper. To cuits associated with thermionic tubes and is the undersurface of the base I6 there is fastened particularly applicable for testing household athermionic tube socket I'I. Openings IBK, ISG,

5 radio sets and for laboratory experiments ISP, etc. are provided in the base I6 for the 5` thereon. reception of the prongs of a thermionic tube.

The principal object of the invention is to pro- Beneath each of said openings there is a contact vide a simple, compact and convenient unit member or jack ISK, ISG, ISG', etc. which makes which may be easily carried in the kit of a radio yielding electrical contact with the prongs of the l service man and which provides for the complete tube in the well knownmanner. In the embodi- 10. testing of each tube circuit of a radio set without ment of the invention shown herein, the socket disturbing the wiring of the set and without the Il is provided with eight of these jacks and the use of the confusing array of electrical switches base plate It is provided with a corresponding heretofore used for the connection of meters for number of openings I8. In Fig. 1 the openings l5 the necessary current and voltage readings. The I8F-, I8F+, I8P and ISG are provided for the 15 testing set is provided with a socket for the recepnegative and positive filament prongs, the plate tion of the tube whose circuit is to be tested and prong and the grid prong respectively of the a plug to be inserted in the socket of the radio four-terminal tube. In addition, there are proset from which the tube has been removed. It Avided openings ISF'}, I 8P', I8G and ISK for is also provided with convenient meter terminals one heater prong and the plate, grid and cathode 20 preferably in the form of jacks for the reception rprongs of the five-terminal tube. The opening of test prongs attached to the meters used for IBF-f in this arrangement is properly placed for the determination of the voltages and currents the second heater prong of the five-terminal associated with the tube. The tube socket and tube. Thus, either the iive-prong or four-prong jacks are conveniently mounted on a single base tube may be inserted in the socket. 25 while the plug is connected thereto by a multiple Surrounding the tube socket there are fastened conductor cord of convenient length. During a to the base It several meter terminals 2IlF-, test the tube' continues to function as a part of 2I3F|, 2ilP, 20Gv and 20K which are preferably its constituent radio set but the operating conjacks of the standard form illustrated in Fig. 2.

ditions of its circuit may be accurately deter- These jacks are connected by conductors 2IF-, 30 mined without the necessity of breaking connec- RIF-F, 2 IP, 2 IG and ZIK respectively to the tube tions within the radio set to determine current jacks I 9F-, I9F+, I9P, ISG and ISK. Conreadings, without the .necessity of probing withductors ZEP and 2IG also extend to tube jacks in the radio set to measure the voltages asso- |912 and ESG and conductor 2IF-lextends to tube ciated with the tube, and without any complijack I8F+. p 35 cated switching arrangement in the testing set There are also provided on the base I6 a group itself. of similar jacks arranged in pairs 22F, 22F-{,

Other objects and features of the invention 22?, E2G and 22K. U-shaped jumpers 23F-, will be understood from the accompanying draw- 23F-{-, 23R ESG and 23K are inserted in the coring and the following description and claims: responding pairs of jacks and normally provide 40 Fig. 1 is a plan view of a preferred form of the electrical connections between them. The prongs invention. Fig. 2 is a sectional View taken on the yI3F, I3F-{, I 3P', I3G' and IEK of the plug II line 2--2 of Fig. 1. Fig. 3 is a partial sectional are electrically connected by conductors 24F, view taken on the line 3-3 of Fig. l. Fig. 4 is a 2IiF{-, 22.?, MG and 25K to one of the jacks of perspective view of the testing set in operation. the corresponding pairs 22F, 22F-{, etc. The 45 The principal parts of the testing set comprise opposite jacks in each pair are connected by conthe unit DTODGI lil, a plug Il and a cable or cord ductors 255'-, 25F+, etc. to the corresponding connection I2 between the two. The plug II is jacks of the 2!! series. provided with terminal prongs ISF-, I 3F-1., By means of this arrangement there is a jack 13G', ISP and ISK arranged to be inserted in of the 2Q series directly connected to each ele- 50 one of the standard types of thermionic tube ment of the tube while a pair of the jacks of the SOCkeS. 22 series is connected in series between each ele- The unit proper as herein illustrated consists ment of the tube and the corresponding prong of of a box having a bottom I4, side walls I5 and a the plug II. To measure the voltages between cover plate I6. The cover plate I6 is of insulef-` any two elements of a five-terminal tube it is 55 only necessary to remove the tube from the radio set, insert it in the socket I'I, insert the plug II in the socket from which the tube has been removed and insert the test prongs of a voltmeter in the proper jacks of the 20 series. To measure the current passing to or from any element of the tube the proper jumper of the 23 series is removed from its jacks and the test prongs of an ammeter are inserted therein. Y

In Fig. 4 the testing set is illustrated as arranged for the testing of the circuits of a radio set 40. In this arrangement one of the tubes 4I of the radio set has been removed from its socket and the plug Il has been inserted therein. The tube 4I has been inserted in the socket of the testing unit proper. The jumper 23P for the plate circuit of the tube has been removed from its corresponding jacks 221D and the test prongs 42 of a milliammeter 43 have been inserted in said jacks. Similarly, the test prongs 44 of a voltmeter 45 have been inserted in the jacks 20F- and 2DP. The tube continues to function as a part of the radio set 40 at the same time that its plate current is measured by the milliammeter 43 and the plate voltage is measured by the voltmeter 45. No complicated switching has been performed, the result being attained by the simplest manipulation oi the test prongs and jumper.

When it is desired to test a four-terminal tube there is attached to the plug II an adapter 26 having sockets numbered in the 21 series and corresponding to the prongs of the I3 series. The adapter 26 is provided with prongs 2813-, 28F-[-, 28P and 28G properly spaced to t the jacks of a standard four-terminal tube socket. The said prongs are electrically connected to the sockets 21E- 2'IF+, 2IP and 2`IG respectively and are thus electrically connected to the corresponding jacks of the socket I 'I. The socket 21K has no electrical connection since it is not needed for the four-terminal tube.

The foregoing specication describes one form of the invention but it is appreciated that many variations may be made therein without departing from the invention as defined in the appended claims. For example, it is not necessary that the jacks I9 be assembled on a socket I'I as described herein. They may be individually attached to the base I6 and the term "tube socket as used in the claims is intended to include such a construction. Similarly, the invention is not limited to the use of four and five-terminal tubes, as illustrated herein. The socket I'I may be adapted for any and all of the standard tubes in common use, or individual sockets for the several types of tubes may be mounted on the base The plug I I is then provided with prongs for the tube having the largest number of terminals to be used and suitable adapters similar to that described are provided for tubes having a lesser number of terminals. It is also possible and desirable in some cases to mount the meters within the box of the unit proper, thus forming a completely self contained testing unit. It is also possible to eliminate the jumper connection between the pairs of terminals 22 by the use of standard two terminal jacks in which the two terminals are normally in contact but are separated by the insertion of a two terminal test prong connected to the ammeter. The term separable connection as used in the claims is `intended to include such a construction.

The invention claimed is: 1. In testing apparatus, a transfer unit comprising a tube socket, a plug having prongs of the design and number adapted to be received in said socket, circuit connections between the prongs of said plug and the corresponding terminals of said socket, and means in a plurality of said circuit connections for detachably receiving the terminal leads of a measuring instrument.

2. In testing apparatus, a transfer unit comprising a tube socket, a plug having prongs of the design and number adapted to be received in said socket, circuit connections between the prongs of said plug and the corresponding terminals of said socket, and means for introducing a current measuring instrument into certain of said circuit connections; said means in each circuit connection comprising a pair of terminalreceiving members and a displaceable member normally connecting said terminal-receiving members in series in the associated circuit connection, said terminal-receiving membersbeing 'adapted to receive the terminal leads of a current measuring instrument.

3. The invention as claimed in claim 2, wherein an additional terminal-receiving means is included in each of said certain circuit connections.

4. A testing set including a base, a socket for a thermionic tube mounted thereon, jacks for the reception of meter test prongs mounted on said base, a plug having terminals insertable in a thermicnic tube socket, and conductors connecting corresponding terminals of said first mentioned tube socket and said plug and connecting each of said jacks to one of said socket terminals.

5. A testing set including a base, a socket for a thermionic tube mounted thereon, a pair ci jacks for the reception of meter test prongs mounted on said base, a plug having terminals insertable in a thermionic tube socket, conductors connecting one terminal of said plug to one of said jacks and connecting the corresponding terminal of said rst mentioned socket to the other of said jacks, a removable jumper insertable in said jacks for electrically connecting the same, and other conductors connecting other terminals of said plug to corresponding terminals of said rst mentioned socket.

6. A testing set including a base, a socket for a thermionic tube mounted thereon, a group of jacks for the reception of meter test prongs mounted on said base, a plug having terminals insertable in a thermionic tube socket, conductors connecting said jacks to corresponding terminals of said first mentioned socket, a pair of other jacks mounted on said base, conductors connecting a terminal of said plug to one of said pair of jacks and connecting the other of said pair to the corresponding terminal oi' said rst mentioned socket, a removable jumper insertable in said pair of jacks for electrically connecting the same, and other conductors connecting other terminals of sai-d plug to corresponding terminals of said first mentioned socket.

7, A testing set including a thermionic tube socket, a pair of meter terminals adapted for convenient contact with meter connections, a plug having terminals insertable in a thermionic tube socket, conductors connecting one terminal of said plug to one of said meter connec- Jtions and connecting the other of said meter connections to the corresponding terminal of said rst mentioned tube socket, a removable jumper connecting said meter terminals, and other conductors connecting other terminals of said plug to corresponding terminals of said rst mentioned socket.

8. A testing set including a plug having terminal prongs insertable in a thermionic tube socket; a self contained unit including a thermionic tub-e socket and a number of meter terminals; and a cable connection between said plug and said unit; certain of said meter terminals being separably connected in pairs in series between corresponding terminals of said plug and said second mentioned tube socket.

9. A testing set including a plug having terminal prongs insertable in a thermionic tube socket; a self contained unit including a thermionic tube socket and a number of meter terminals; and a cabl-e connection between said plug and said unit; certain of said meter terminals consisting of jacks for reception of meter test prongs arranged in pairs having a removable jumper connection, each pair being connected in series between corresponding terminals of said plug and said second mentioned tube socket.

l0. A testing set including a plug having terminal prongs insertable in a thermionic tube socket; a self contained unit including a thermionic tube socket and a. number of meter terminals; and a cable connection between said plug and said unit; each terminal prong of said plug being connected to a corresponding terminal of said second mentioned tube socket and certain of said meter terminals comprising jacks for reception of meter test prongs, each electrically connected to one of the terminals of said second mentioned tube socket.

l1. In testing apparatus, a transfer unit for establishing circuit connections between a tube socket of a radio receiver and a measuring instrument, said unit comprising a base member including a tube socket, a plug having prongs of the same number and design as those of a tube which may be received in said socket, leads connected to the plug prongs and forming a cable terminating in said base member, a plurality of pin jacks carried by said base member, and a connection including at least one pin jack between each cable lead and a terminal of said socket.

12. In testing apparatus, a transfer unit comprising a tube socket, a plug having prongs of the design adapted to be received in said socket, and circuit connections between the prongs of said plug and the corresponding terminals of said socket, each of said circuit connections including a pin jack adapted to receive pin terminals for establishingv connections to a measuring instrument.

ROBERT N. AUBLE. 

